Single-row cylindrical roller bearing NJ2310-E-XL-M1 carries roller sets guided by a machined brass cage (M1) and features the reinforced E design with two ribs on the outer ring and one rib on the inner ring, giving a semi-locating configuration that fixes axial position in one direction while allowing free axial displacement in the other. Bore diameter is 50.0 mm, outside diameter 110.0 mm, width 40.0 mm, net mass 1.93 kg. Limiting speed is 11600 rpm, reference speed 4900 rpm, with radial internal clearance in group CN (Group N). The semi-locating arrangement suits shaft mounting positions where axial fixation is needed on one side while the opposite bearing on the shaft accommodates thermal expansion. The separable inner and outer ring construction simplifies mounting and dismounting, and the reinforced rib design increases axial load capacity on the fixed side compared to non-flanged designs. Standard CN clearance and the brass cage support operation up to the stated speed limits under normal lubrication with oil or grease, depending on the operating conditions of the application.